Pressure-reducing valve



(No Model.) 7

E. N. DIOKERSON 8v J. J. SUGKERT.

PRESSURE REDUG-ING VALVE. No. 571,346. Patented Nov. 17. 1896.

m I v WITNESSES: INVENTORS mmw ATTOR N EY EDVARD N. DICKERSON, OF NEWYORK, N. Y., AND JULIUS J. SUOKERT Prion OF RIDGElVOOD, NEW JERSEY.

PRESSURE-REDUCING VALVE.

SPECIFICATION forming part of Letters Patent No. 571,346, dated November17, 1896. Application filed June 22, 1895. Serial No. 553,676. (Nomodel.)

To aZZ whom it may concern:

Be it known that we, EDWARD N. DICKER- SON, of the city, county, andState of New York, and JULIUS J. SUCKERT, of Ridgewood, Bergen county,New J ersey, have invented a new and useful Improvement in Pressure-Reducing Valves, of which the following is a full, true, and exactdescription, reference being had to the accompanying drawings.

Our invention relates to apparatus designed to receive a gas or vaporunder pressure and to deliver the same at a pressure differing from thatat which it is received.

\Ve will describe a pressure-regulator embodying our improvement andthen point out the novel. features in the claims.

In the accompanying drawings, Figure 1 is a central vertical sectionthrough a pressure regulator embodying our improvement. Fig. 2 is anelevation of the regulator as viewed from the right of Fig. 1 with oneof the coverplates removed. Fig. 3 is a section on the plane of thebroken line 3 3 of Fig. 1.

Similar letters of reference designate corresponding parts in allfigures.

A represents the body portion of the pressure-regulator casing. It isshown to be cylindrical in form and closed at the ends by cover-plates AA,secured by suitable fastening devices to the body portion. Theinterior space inclosed by the body portion and coverplates constitutesa diaphragm-chamber. In the present instance we have shown twodiaphragms B B extending across the diaphragmchamber. The diaphragms mayconveniently be secured in place by clamping their edges between thebody portion A of the regulatorcasing and the respective covering-platesA A.

The regulator is provided with an inlet-port O and an exhaust-port C forthe influx and efflux of the gas, the former extending into the annularspace between the diaphragms through avalve-controlled passage-way,while the latter is in free communication with said space. The ports 0and C will preferably be threaded to engage with suitable pipes orconduits.

D is a valve-chamber provided with a valve D, tapering or pointed at itsouter end to i1n-.

pinge against the valve-scat at the lower surface of the valve-chamber.

Preferably the material forming the valve and the seat therefor will beof relatively different degrees of hardness that the valve may embeditself more or less in its seatfor instance, one may consist of bronzeand the other of a softer alloy.

To provide a suitable material for the valveseat, as well as to renderthe same readily removable for renewal purposes, we prefen ably form thevalve-chamber D in a bushing E, fitting into an aperture in the side ofthe regulator. When this construction is adopted, the port C may well beformed in a separable piece or block F, secured to the regulator bysuitable means, the block having an annular tongue f, engaging with anannular flange f upon the bushing E to retain the latter in place.

Packing f may well be interposed between the edges of the tongue f andflange f;

G is the passage through the bushing E, whose extremity forms the seatfor the valve 1) V The valve D is fluted or channeled longitudinally, asshown at g, for the passage of gas, while a pin g, secured to andextending from the bushing E, enters one of the flutes, preventing therotation of the valve.

Links H H are pivoted at their lower ends to a stud H, attached to thevalve. At its upper end each link II is jointed to a second link H whichin turn at its upper end is pivotally secured to one end of across-piece I, secured to the upper portion of the diaphragm-chamber.Each pair of links H and H forms a toggle or knuckle joint where the oneis journaled to the other, the center lines of each pair of links whenthe valve is elevated from its seat being inclined toward the oppositepair.

K is a post pivoted at one end to the jointed portion of each pair oftoggle-joint links H H and at the opposite end rigidly secured to thediaphragm B, as by a nut and washers 7t- 70. Preferably there will beprovided an car 76 on each link I-I, upon which the post K rests andupon which the weight thereof, as well as a portion of each diaphragm,is borne.

L is a bow-spring secured at opposite ends to the links H H and looselysupported by a screw L, entering a tapped hole in the cross-piece Lthisconstruction affording ready means for adjusting the pressure at whichthe gas is delivered.

One or more openings M are provided in each covering-plate A that theatmosphere may have access to the outer surface of the correspondingdiaphragm. A strainer N, of canvas or other open material, may besecured, for instance, by a flexible band it, within each cover-plate toprevent contact of dust with. the diaphragm.

O is a pressure-gage secured to the side of the regulator, having aconduit or pipe open to the full pressure of the entering gas.

It .will be seen that this construction is well adapted to secure achange in pressure of a high-pressure gas, since a slight change inpressure in the diaphragm-chamber causing a slight movement of thediaphragm will exert through the action of the toggle-joint links a verygreat pressure upon the valve to force the same to its seat against theresistance of the entering gas, and that this pressure increases as thecenter lines of the links in each pair of links approach parallelism.

\Ve have shown two diaphragms and two pairs of toggle-joint links; butit is evident that the operation of the apparatus is not dependent uponthis duplication, since if one diaphragm is rendered accidentallyinopera-' tive the corresponding passage ill maybe closed, and the otherdiaphragm will then fulfil the functions of the apparatus.

The operation of the regulator may be described as follows: Thel1igl1-pressure gas, entering the diaphragm-chamber through thepassage-way G, exerts an outward pressure upon the diaphragms B B,expanding the same and causing the toggle-joint links to straighten out,thereby forcing the valve D toward its seat and throttling the enteringgas, reducing the pressure thereof as it passes to thediaphragm-chamber. Any change of pressure in this chamber is respondedto by the diaphragms and by them communicated to the valve to increaseor decrease the throttling action, as the case may be.

Having described our invention, what we consider as new, and desire tosecure by Let ters Patent, is-

1. In a pressure-regulator the combination with a plurality of flexiblediaphragms, of a scored or fluted valve-plug, toggles secured at one endto the valve-plug and at the other end to the interior of thepressure-chamber, links connecting the toggles with the flexiblediaphragms, a spring bearing upon one of the arms of the toggles tocontrol the valve-opening, and means for regulating the pressure exertedby said spring, substantially as specified.

2. In a prcssure-regulator the combination with a plurality of flexiblediaphragms, of the block F, valve D, bushing E, the packingringintermediate of the bushing E and block F, toggles secured at one end tothe valveplug and at the other end to the interior of thepressure-chamber, links connecting the toggles with the flexiblediaphragms, a spring bearing upon the toggle-arms, and means forcontrolling the pressure of said spring, substantially as specified.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

E. N. DIOKERSON. JULIUS J. SUOKERT. Witnesses:

ANTHONY GREF, WILLIAM A. POLLOCK.

